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LSPHP5 cpu issue

I'm running a rather large vbulletin forum with VBSEO but sadly it appears I am unable to get any stability going with litespeed. My CPU will often jump up from around 16 to 100+ or more and I'm unsure as of why, assistance would be appreciated.

It seems to be correcting itself again, allthough I made two alterations, I disabled vbulletins live topic and vboptimize, given that the optimize was already built into the configuration of vbulletin (memcached) and using xcache with vbseo , it appears to be "ok" as of this moment, but I'm sure it will go haywire shortly.

please note those lines with "Timeout", I think this may be an important clue. Many lsphp5 process are waiting something and get timeout, this will cause high load. I guess maybe waiting for responses from MySQL. most likely code bug somewhere, cause high load under some conditions.